Hi Forum, Would appreciate some suggestions re buttock pain that radiates down the back/outside of my left side sometimes all the way to the ankle. I developed this when I started to do the Simple Program and as a result increased the number of swings that I normally did. I am a female and had progressed to single swings with 16kg. (I'm athletic, had training from an RKC earlier and did a more varied kettlebell program in the past). I stopped swinging and goblet squats for several weeks and the symptoms disappeared. I started up again with 14kg. but again developed the same symptoms. I'd like to continue with the Simple program-the strength building was great. Any ideas? Thanks.